1304400225402 has 48 divisors (see below), whose sum is σ = 2903405578632. Its totient is φ = 422929019520.

The previous prime is 1304400225389. The next prime is 1304400225467. The reversal of 1304400225402 is 2045220044031.

1304400225402 is a `hidden beast` number, since 1 + 3 + 0 + 4 + 400 + 2 + 254 + 0 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 705988133361 + 598412092041 = 840231^2 + 773571^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2093652 + ... + 2644272.

Almost surely, 2^{1304400225402} is an apocalyptic number.

1304400225402 is an abundant number, since it is smaller than the sum of its proper divisors (1599005353230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1304400225402 is a wasteful number, since it uses less digits than its factorization.

1304400225402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554223 (or 554220 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 1304400225402 its reverse (2045220044031), we get a palindrome (3349620269433).

The spelling of 1304400225402 in words is "one trillion, three hundred four billion, four hundred million, two hundred twenty-five thousand, four hundred two".